Means for preventing shocks by the axles of tramway and railway vehicles.



T. C. WINHELD. MEANS FOR PREVENTING SHOCKS BY THE AXLES OF TRAMWAY AND RAILWAY VEHICLES.

APPLICATION FILED JULY 24. 1917.

Patented June 11. 1918.

2 SHEETS-SHEET I.

Tyc. WINFIELD. MEANS FOR PREVENTING SHOCKS BY THE AXLE'S 0F T RAMWAY AND RAILWAY VEHICLES.

APPLICATION FILED JULY 24. WI 7. LQ69523, Patented June 11. 1918.

2 SHEETS-SHEET 2.

m/ I/EJI/ T0 /6 7970M ms mg a m. a5 WwF/a a IINITE THQIPLTAS CHARLES WINFIELD, 01E WANSTEAD, ENGLJQND.

MEAN S IFQR PREVENTING SHOCKS BY THE AXLES 0T TI UAIKWAY MID RAILWAY VEHICLES.

specification of Letters Patent.

Patented Jane iil, this.

Application filed July 24, 1917. Serial No, 18%,t 5 l.

To all whom it may concern:

Be it known' that I, THoMAs CHARLES TVINFIELD, a subject of the King of Great Britain and Ireland, and a resident of VVanstead, county of Essex, England, have invented a certain new anduseful Improve ment in Means for Preventing Shocks by the Axles of Tramway and Railway Vehicles, of which the following is a specification.

This invention relates to end thrust shock absorbers for the axles of tramway and railway vehicles, and to the type of absorber characterized by a spring interposed between the end of the axle which is free to move laterally and the inside of the lid of the axle box, which lid is detachably mounted. on the axle box in a dust-tight manner. In the above connection the spring has been positioned by means of a boss on the inside of the lid and a hollow bush, said spring fitting around said boss, and in said bush which is slidably but non-rotatably mounted in the axle box and through the. in-

termediary of a bearing plate pressingagainst the end of the axle,

According to the present invention, the bush which is provided with a flanged inner end is slidably but non-rotatably mounted on a machined, elongated and parallel boss on the inside of the lid and the spring arranged outside the bush and around the boss so as to bear against theinside of the lid and flangedend of the bush, which flanged end bears directly against the end of the axle.

Further, to enable the absoirber, as a whole, to be readily removed, the boss on the lid is provided with a projecting and spring-controlled pin which normally takes in a slot in the wall of the bush and bears against the outer end thereof, said pin when the absorber is removed belng easily pushed that purpose, all of which are of common knowledge.

The invention is illustrated by the accompanying sheets of drawings, in which 2-- Figure l is a vertical longitudinal section taken on line :12, w of Fig. 2, which is a front elevation of the axle box.

By referring to the accompanying drawing, it will be observed that the axle a, ournaled in the hearing I), projects into the axle box it, whereby the end thereof is iocated adjacent the usual journal box opening which has detachably fitted thereto a suitable lid or cover e that may be secured to the box it by bolting the ears 7?: thereto in the well known manner. The top of the said lid or cover 6 is preferably provided with a lubricant receiving opening 9 clearly shown in Figs. ly and 2.

Referring now more particularly to the shock absorbing unit constituting the present invention, it will be observed that the same essentially consists of a flanged bushing member 0 adapted to engage the end of the axle a while its cylindrical portion is adapted to receive a rigid boss 6 preferably formed integral with the cover or lid 6 as shown in Fig. 1. For the purpose of preventing the spinning of the bushing 0 on the boss e,.when the axle is rotating, the cylindrical portion of the said bushing is formed with a longitudinal slot 0' which is adapted to receive the latch endof a spring pressed latohingbolt f mounted in the end of the boss 6 and arranged diametrically thereof. Thus, it will be apparentthat while the bushing element a and boss e are separate members, they may be readily interlocked when in use to obtain the desiredresults. Furthermore, this type of interlock makes it possible to readily renew the bushing 0 when desired. I p

In order to maintain the-said bushing element 0 in its operative position there is interposed between the flanged portion thereof, and the inner face of the lid 6, a relatively stout coil spring (Z which also surrounds both the cylindrical portion of the bushing and the rigid boss 6'. This spring forces the bushing 0 into yielding engagement with the end of the axle.

Having now described my invention, What li claim as ne and desire to secure by Letters Patent 0 the United States is 1. A shock absorber for journal boxes, ineluding the combination with the box and axle therein, of a detachable lid for said vbox having a lubricating hole in the top thereof and a boss on the inner side thereof, a bushing element having a slot and slidably mounted on said boss, and also having a flanged end adapted to bear against the end of said axle, a spring surrounding said bushing and boss and confined between said lid and the flanged end of the bushing, and a spring controlled locking pin carried by the boss and engaging said slot of the bushing to prevent rotation of the latter and aeaeee also enable the entire absorber 'tobe removed as a whole.

2. A shock absorber for journal boxes in cluding the combination with the box and a detachable lid therefor, of a shock absorber I unit carried by said lid and including. a rigid boss element on the inner face of said lid, a removable bushing element detachably interlockedwith said boss, and aspring c01n-' 

